AppDesigner Project not Opening

i was just working on my appdesigner project and i don't remember editing any settings i just added a simple line of code to send message by CAN . now the project runs normally but when i try to open it in appdesigner to edit the code it doesn't open while all the other projects files opens normally , it just show me empty screen

i restarted the laptop and matlab and it still doesn't work

Answer 1

[Ibrahim Essam]

I opened the file in a newer version of MATLAB, I think it was 2017a and the upgrade procedures which shows when you open a project from an older Matlab version in new one, fixed my project file.

Answer 2

[Walter Roberson]

Some people have been able to recover appdesigner use if they rename their prefdir -- that is, a preference might have messed something up.

[Ibrahim Essam]

i tried this but it didn't work i think the app file is already corrupted or something because i tried it on another pc and it didn't open too

[Christian Kruse]

Did you solve this issue? I am facing the same problem and even installed a newer Matlab version (now 2017a previous 2016b) but I can't get the appdesigner to open the file. Other files open fine and the file that can't be opened also executes fine.

[Dmitry]

Same problem here with 2017b. The file runs ok with double click, but won't open in AppDesigner. I can also unzip it and read all content, so I guess it is not corrupted.

[Neil]

I am having the same problem. mlapp file was created in 2016b and modified in 2017a. Tested on 2 computers with 2017a...runs and opens fine. Tested on 2 computers with 2017b...runs fine but won't open. Dialog box saying 'Error loading XXXX.mlapp' but no other information.